Process of making leather tires.



E. SPIEGEL.

PROCESS OF MAKING LEATHER TIRES.

APPLICATION FILED FEB. 8, 1913.

Patented Aug; 17, 1915.

WITNESSES A TTO R N EYS COLUMBIA I LA\1OG EMIL SPIEGEL, OF WARNSDORF, AUSTRIA-HUNGARY.

rnoonss OFMAKING LEATHER TIRES.

Specification of Letters Patent.

Patented Aug. 17, 1915.

Application filed February 8, 1913. Serial No. 747,151.

To all whom it may concern:

Be it known that I, EMIL SPIEGEL, manufacturer, asubject of the Emperor of Austria-Hungary, and a resident of No. 1395, ll arnsdorf, Bohemia, in the Empire of Austria-Hungary, have invented a Process of Making Leather Tires; and I do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same.

This invention relates to a process of making leather tires from leather plates arranged in a row in the groove of the wheel rim and permanently firmly pressed against each other, in such a manner that, after.

placing the leather plates in the grooves .of the rim, the moisture contained in the same is withdrtwn from them as completely as possible, by drying them in a drying kiln, and the plates are closely arranged together or pressed against each other in the groove of the rim, by driving in wedges and replacing the same by leather plates, the pressure being still maintained, in such a manner that after having taken up the moisture of the air, or after treatment in a soaking bath,

7 there is produced an exceedingly powerful pressure which is not liable to become re duced.

Reference to be had to the accompanying drawings forming part of this specification in which similar letters of reference indicate corresponding parts in both figures, and wherein Figure 1 is a front elevation of a wheel" provided with a tire embodying my invention, and Fig. 2 is partly a side elevation and partly a cross-section of the same.

The process can be carried out in the following manner: The plates a are put in as closely as possiblein a non-dried state and firmly compressed by hand or by some suitable mechanical press device, whereupon the whole wheel is broughtinto thedrying kiln, where it is left until the leather is deprived of moisture, as completely as possible, which becomes noticeable owing to the appearance of numerous gaps between the leather plates.

The wheel 6 is then again fixed in the device for inserting the plates, and on the whole circumference, at suitable distances apart, are driven in as much as possible chisel-like wedges. These wedges are then replaced by leather plates, without relaxing the pressure so that the wheel rim is closed with high pressure.

The groove 0 in the wheel is a dovetail groove, and the plates (5 are placed therein as follows: A plate o, is placed in the groove c with the plane ofthe plate extending longitudinally of the plane of the wheel and the plate then turned so. as to extend transversely of the plane of the wheel. This will again completely be repeated for each successive plate placed in the groove until enough plates less, say, three or four, to make a complete tire, 'are'in the groove. The last 3 or iplates a are then introduced into the groove 0 in correct positionobliquely from above, one end of their dove-tailed extension being first put in inclined direction into the groove and the other end of the dovetail still projecting being then pressed in by means of a small piece ofiron. v This latter operation is quite easy since the leather plate is elastic and therefore the small corner of the dovetail of the plate which is pressed in will reoccupy its natural straight position immediately after having been introduced into the groove. Some strokes with the hammer will then bring the plates into. their final position. 7

After drying the wheel and driving in the chisel-like wedges between the plates, the

wedges are turned laterally and slowly withdrawn and simultaneously leather plates are introduced from the side into the resulting gap of the rim, viz. by putting them again with one end of the dove-tail in the groove whereupon the other end is pressed in by means of a small piece of iron and the plates are brought into correct position by some strokes with the hammer. When the wheel is then exposed to the moisture of the air, the renewed expansion of the previously dried plates will produce a very high, hitherto unattained pressure, which is mainmosphere. The present process makes it possible, on the contrary, owing to the combination with energetic preliminary drying, to obtain, even without use of mechanical compression, leather tires which remain permanently firm and in a state of tension even in the driest atmosphere.

What I claim as my invention and desire to secure by Letters Patent is:

1. The process of manufacturing leather tires from leather plates, consisting in arranging the leather plates in a row in the groove of a rim, compressing and tightening .the plates in the groove of the rim, depriving the leather plates in the groove of the rim of their moisture, adding more plates to the row of leather plates in the groove while the plates are .still dry, and maintaining same substantially under constant pressure,

andthen causing said leather plates in the groove to swell.

Witnesses:

2. The process of making leather tires from leather plates, consisting iniarranging by bringing the wheel with the plates into a drying kiln, completing the tire by inserting more plates between sundry of the dried and shrunken plates and compressing again the lates in the groove of the wheel rim and then causing said leather plates in the groove to swell. y y

3. The process of making leather tires from leather plates, consisting in forming a tire on a rim' by compressing and tightening,

the plates in the groove of a wheel rim, then depriving the, leather plates of their moisture, adding more plates to the rim to fill the gaps in the tire caused by shrinkage of said plates,-and then saturating the tire with a suitable compound to cause said plates to swell. s

. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. J

EMIL SPIEGEL'.

FRANZ SIMON, AUeUsr OosrnRMAN. 7

copies of this patent may be obtained forfive cents each, by addressin h egon'lmi'ssione-r ratntg,

' WashingtomDl G. r r 7 v 

